Independent Touch Probe for Z Leveling in 3D printers with any bed surface

Well I think I wasn't clear (withou sketch it sin't easy)

Please see on the picture what I was speaking about :
[sketch.io]

The dark red foil should be in contact with the tip when the probe is in position.
I hope it is clearer.
A solution with a spring may be good too ! Sorry I read your post too fast !

The idea was just to have the probe easily detacheable from the printer (and not having to solder anything on the hotend itself)

Oh, I saw that post when browsing the coreXY thread (I've got a coreXY too)

Yes I thought about that in the early concepts but when I realized that during touch the current still goes through anything conductor I thought it wasn't worth it as it only introduces more layers between the bed and nozzle. I am sticking to the belief that one layer max is more than enough. The leaf spring is a better approach in my opinion.

But I believe two metal strips works as well.

---

RepRap Lander concept on Concept Forge
RepRap Lander concept on RepRap Forums
My Things, mostly experimental stuff

I would say that the currentg only goes throug all when the current have somewhere to run. If there is no potential difference, there will be no current coming trough the hotend.

What software do you use for the design of your sketch ?

I use DesignSpark Mechanical.

Ok, I might have difficulties expressing myself in electronic terms. My reasoning was this:
- 5v to metal strip, ground to hotend or leaf spring on probe.
- nozzle touches leaf spring
- nozzle touches metal strip
=> current runs from 5V through nozzle to the end connection of the ground, which is the Arduino/Rapms (potential difference here?)

- IF something wrong then current can flow out through a different path (via the whole hotend through which the current flows on contact),potentially shorting another electronic component? I have no idea what can happen here.

Edited 1 time(s). Last edit at 02/12/2016 04:37AM by realthor.

---

RepRap Lander concept on Concept Forge
RepRap Lander concept on RepRap Forums
My Things, mostly experimental stuff